What kind of kinky wizard shit does Will get up to with that spellbook of theirs?
oh lets just go down the spell list! (before i rework it again for use in pathfinder)
most of the spells in my book are just my selection of regular magic! but there's a few that are 100% for horny purposes and a few that have their situational horny uses as a bonus to the normal effect
Magnificent Mansion is the biggest horny one, door to a pocket dimension of my own custom design, stocked with enough food to feed 100 people each a 9 course meal that sates them for the next 24 hours AND 100 phantom servants to cater to my whims too. Every aspect to my exact specifications, the layout and decoration of the building, the form the servants take, the contents of the meal. it has some other restrictions but that selection of food being available to me with basically a daily restock has definitely had an effect on my weight
Alter self and shapechange are on the list mostly to fit my limited shapeshifting powers within the abstraction of d&d rules lmao. but the horny options there are endless with the right imagination
hold person is useful for the few seconds needed to get my jaws around some particularly feisty prey; but its also just as useful on the battlefield, paralyzing your enemy and such
misty step is perhaps only horny when getting stuck in doors isnt. too wide for the door? thats fun but sometimes i've got places to be and being able to poof to the other side of the door with a word is convenient (teleport to somewhere within 30 ft and line of sight)
my favorite that i outright dont have access to is Goodberry, creates 10 berries that each one sustains a creature for 24 hours, and its an extremely cheap spell. 10 days worth of calories per casting, and a high level druid could cast it 20-30 times in a day.